Tissue distribution of 5-hydroxymethylcytosine and search for active demethylation intermediates.
Tissue distribution of 5-hydroxymethylcytosine and search for active demethylation intermediates.
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DOI:
10.1371/journal.pone.0015367
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发表时间:
2010-12-23
期刊:
影响因子:
3.7
通讯作者:
Carell T
中科院分区:
文献类型:
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作者:
Globisch D;Münzel M;Müller M;Michalakis S;Wagner M;Koch S;Brückl T;Biel M;Carell T
5–Hydroxymethylcytosine (hmC) was recently detected as the sixth base in mammalian tissue at so far controversial levels. The function of the modified base is currently unknown, but it is certain that the base is generated from 5-methylcytosine (mC). This fuels the hypothesis that it represents an intermediate of an active demethylation process, which could involve further oxidation of the hydroxymethyl group to a formyl or carboxyl group followed by either deformylation or decarboxylation. Here, we use an ultra-sensitive and accurate isotope based LC-MS method to precisely determine the levels of hmC in various mouse tissues and we searched for 5–formylcytosine (fC), 5-carboxylcytosine (caC), and 5–hydroxymethyluracil (hmU) as putative active demethylation intermediates. Our data suggest that an active oxidative mC demethylation pathway is unlikely to occur. Additionally, we show using HPLC-MS analysis and immunohistochemistry that hmC is present in all tissues and cell types with highest concentrations in neuronal cells of the CNS.
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影响因子:
25
作者:
Feng, Jian;Zhou, Yu;Campbell, Susan L.;Le, Thuc;Li, En;Sweatt, J. David;Silva, Alcino J.;Fan, Guoping
通讯作者:
Fan, Guoping
DOI:
10.1016/s0006-291x(88)80489-3
发表时间:
1988-03-30
影响因子:
3.1
作者:
CANNON, SV;CUMMINGS, A;TEEBOR, GW
通讯作者:
TEEBOR, GW
影响因子:
4.8
作者:
Boorstein, RJ;Cummings, A;Teebor, GW
通讯作者:
Teebor, GW
DOI:
10.1073/pnas.97.26.14183
发表时间:
2000-12-19
影响因子:
11.1
作者:
Rusmintratip, V;Sowers, LC
通讯作者:
Sowers, LC
影响因子:
64.8
作者:
通讯作者:
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